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[原创]Maxim MAX77655低IQ SIMO PMIC解决方案

关键词:电源管理 PMIC Maxim MAX77655

时间:2020-09-27 12:07:31       来源:中电网

Maxim公司的MAX77655是高度集成的低功耗应用的电源解决方案.这些应用中尺寸和效率都是极为重要的.该器件具有单电感多输出(SIMO)降压-升压稳压器,单个电感可提供4个单独可编程的电源轨,以最小化解决方案的尺寸.PMIC可提供总700mA输出电流(3.7VIN, 1.8VOUT).双向I2C接口允许配置和检查器件的状态.支持输出电压从0.5V到4.0V,

3.7VIN和1.8VOUT时的效率高达90%.主要用在TWS蓝牙耳机/助听器,健美,健康和活动监视以及智能手表,手持设备和传感器节点和消费类物联网(IoT).本文介绍了MAX77655优势和特性,简化框图和SIMO框图,典型应用电路图以及评估板MAX77655 EVK主要特性,电路图,材料清单和PCB设计图.

 

 The MAX77655 provides a highly-integrated power supply solution for low-power applications where size and effi­ciency are critical. Also, it features a single-inductor, multi­ple-output (SIMO) buck-boost regulator that provides four independently programmable power rails from a single in­ductor to minimize total solution size. The PMIC is capa­ble of delivering a total of 700mA output current (3.7VIN, 1.8VOUT).

A bidirectional I2C interface allows for configuring and checking the status of the devices. An internal on/off con­troller provides a controlled startup sequence for the regu­lators and provides supervisory functionality when the de­vices are on. Numerous factory programmable options al­low the device to b..

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